56 lines
2.5 KiB
Plaintext
56 lines
2.5 KiB
Plaintext
tests/cases/conformance/types/typeRelationships/typeInference/genericCallWithOverloadedConstructorTypedArguments.ts(36,14): error TS2453: The type argument for type parameter 'T' cannot be inferred from the usage. Consider specifying the type arguments explicitly.
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Type argument candidate 'boolean' is not a valid type argument because it is not a supertype of candidate 'number'.
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==== tests/cases/conformance/types/typeRelationships/typeInference/genericCallWithOverloadedConstructorTypedArguments.ts (1 errors) ====
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// Function typed arguments with multiple signatures must be passed an implementation that matches all of them
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// Inferences are made quadratic-pairwise to and from these overload sets
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module NonGenericParameter {
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var a: {
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new(x: boolean): boolean;
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new(x: string): string;
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}
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function foo4(cb: typeof a) {
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return new cb(null);
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}
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var r = foo4(a);
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var b: { new <T>(x: T): T };
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var r2 = foo4(b);
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}
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module GenericParameter {
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function foo5<T>(cb: { new(x: T): string; new(x: number): T }) {
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return cb;
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}
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var a: {
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new (x: boolean): string;
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new (x: number): boolean;
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}
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var r5 = foo5(a); // new{} => string; new(x:number) => {}
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var b: { new<T>(x: T): string; new<T>(x: number): T; }
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var r7 = foo5(b); // new any => string; new(x:number) => any
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function foo6<T>(cb: { new(x: T): string; new(x: T, y?: T): string }) {
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return cb;
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}
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var r8 = foo6(a); // error
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~~~~
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!!! error TS2453: The type argument for type parameter 'T' cannot be inferred from the usage. Consider specifying the type arguments explicitly.
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!!! error TS2453: Type argument candidate 'boolean' is not a valid type argument because it is not a supertype of candidate 'number'.
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var r9 = foo6(b); // new any => string; new(x:any, y?:any) => string
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function foo7<T>(x:T, cb: { new(x: T): string; new(x: T, y?: T): string }) {
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return cb;
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}
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var r13 = foo7(1, b); // new any => string; new(x:any, y?:any) => string
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var c: { new <T>(x: T): string; <T>(x: number): T; }
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var c2: { new <T>(x: T): string; new<T>(x: number): T; }
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var r14 = foo7(1, c); // new any => string; new(x:any, y?:any) => string
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var r15 = foo7(1, c2); // new any => string; new(x:any, y?:any) => string
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} |